Translation guide
How to express the idea of a co-star in Japanese, whether as a noun or a verb.
Referring to someone who acts alongside you in a movie, show, or play.
The most direct and common word for a co-star. It literally means 'co-performer' and is used for actors, musicians, etc.
He is my co-star.
Describing the action of sharing the screen or stage with someone.
The standard verb meaning 'to co-star' or 'to perform together'. Used for any shared performance.
Often used for a co-star who plays a counterpart or opposite role, especially in romantic or dramatic pairings. Can imply a more specific relationship than 共演者.
She is my co-star (opposite role).
A descriptive phrase meaning 'person appearing together with me'. Less formal, more explanatory.
I became friends with my co-stars.
It was my dream to co-star with him.
A more casual, descriptive way to say 'appear together'. Slightly less formal than 共演する.
Those two often co-star.